Subdomains

Subdomains

A subdomain allows you to create separate host names for your mail servers, which is usually done when you need to load-balance your e-mail traffic, set up mail servers in different geographic locations, or separately brand your e-mail for different divisions of a company.

For example, the company Jim's Bikes, at www.jimsbikes.com, creates mail servers for its U.S. factory (usa.jimsbikes.com) and its European factory (europe.jimsbikes.com). These subdomains also affect the actual e-mail addresses for company employees, so Jim's e-mail address is jim@usa.jimsbikes.com <mailto:jim@usa.jimsbikes.com> because his office is in the U.S. factory.

When creating subdomains:

• You must also designate the MX record
• DNS updates will take up to 2 hours to take effect (updates may resolve more quickly at some locations than others because many name servers on the Internet retrieve updates at different times).

To create a new subdomain

1. Follow instructions for accessing DNS Manager – Advanced Tools to view the DNS Manager Settings page
2. On the Edit Domain Name Server page, under the Mail Servers: MX Records section, click Add Subdomain next to the domain name
3. On the Edit Subdomains page, enter the new subdomain name in the Domain/Subdomain text box (subdomains must have MX records associated with them)
4. Enter the mail server names in the Mail Server text box
5. Enter the associated priority level in the Priority text box
6. Click Continue
7. Review the list of requested changes
8. Click Continue